AIPMT MAINS2011Physics-Electrostatics
AIPMT MAINS 2011 Physics Electric Field MCQ Question
Type: MCQ-numerical-Medium-Class 12
The electric potential V at any, point (x, y, z), in meters in space is given by V = 4x² volt. The electric field at the point (1, 0, 2) in volt/meter, is
A
16 along positive X⁻axis
B
8 along negative X⁻axis
C
8 along positive X⁻axis
D
16 along negative X⁻axis
Correct Answer
Option B
Detailed Explanation
The electric field is the negative gradient of the potential. Differentiating V = 4x² with respect to x gives E = -8x. At x = 1, E = -8 V/m along the X⁻axis.
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